2003 Hummer H1 "gm class 2 radio unlocked" Questions

...class 2 serial data circuit which supplies VIN information to the radio is replaced and not properly setup with the correct VIN information for that vehicle. To unlock radio you will need access to a ...

...class 2 serial data circuit responsible for transmitting that information. If a mis-match occurs, the radio display will indicate to the user the radio is locked. Once this takes place the radio will ...

GM Mr. goodwrench ! Class 2 Serial Data Link The data link is configured as a ring with discrete lines entering and leaving each module. This allows communications to the modules on the ring if one of